Filtering attachment for water-faucets



(No Model.) v

A W. -A., WILLIAMS. A

FILTERING ATTACHMENT FOR WATER FAUCETS. NAB 18,338.

Patented Oct. 22, 1895.

STATES PATENT- Freon.

WILLIAM A. WILLIAMS, OF SAN FRANCISCO, CALIFORNIA.

FILTE RING ATTACHMENT FOR WATER- FAUCETS.

SPECIFICATION forming part of Letters Patent No. 548,338, dated October 22, 1895.

Application filed June 5,1895. Serial No. 551,772- (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM A. WILLIAMS, a citizen ofthe United States, residing in the city and county of San Francisco and State of California, have invented certain new and useful Improvements in Filter Attachments for Water-Faucets, of which the following is a specification.

My invention relates .to improvements in water-filtering devices of that kind or description which are attached to the faucet; and my improvements consist in the described construction and combination of parts producing a simple, durable, and effective filter-' ing device, as hereinafter more fully explained, reference being had to the accompanying drawings, that form a part of this specification.

In the said drawings, Figure 1 is a side view of the filtering device, partly in section. Fig. 2 shows the parts of the body or case in detail and in vertical section. Fig. 3 is a view in detail of the filtering-cone with a portion of the same broken away to show the construction. Fig. 4 is a plan or top view of Fig. 3. Fig. 5 is a top view of the upper or coupling end of the filter-body. Fig. 6 illustrates a modification.

A A indicate the two parts of the shell or body united by a suitable joint a at the middle, and capable of being separated at that point for cleaning or repairing the parts inside.

B is a threaded coupling for attaching the filter to the end of the faucet. The upper part A of the body is united to the coupling by spinning the rim 0. of the body over the flange b on the end of the coupling.

E 13*, are rubber washers in the coupling.

C is a fiat disk of metal supported in the couplin by a ledge or shoulder b and closing theinterior of the coupling below the threaded portion. A single central aperture C in this plate for the water flowing from the end of the faucet contracts the flow into a small stream and directs it through the center of the body below.

D is a tube fixed in the side of the bodypart A, with the outer end bent downwardly to form a nozzle d and terminating in the inside of the body in an upwardly-turned elbow d The end of the body A below this tube is contracted and forms a dischargen ozzle for that portion of the stream of water which flows through the chamber without passing through the filter.

E is a straining or filtering diaphragm, made of wire-cloth of fine mesh in the form of a cone, covering the open end of the elbow and set with its apex in line with and just beneath the aperture C in the horizontal plate above.

- The bottom of this cone is a solid disk E, to

the rim of which the wire-cloth is joined all around. It has an aperture E, with a cylindrical neck E on the under side, fitted tightly into the end 01 of the tube, but capable of being easily taken off and replaced for the purpose of cleaning the parts.

F in small splash-plate formed of a fiat disk and fixed on the point of the cone in horizontal position directly below the aperture C". This cone forms the diaphragm or filtering medium, and that portion of the stream passing through the sides of the cone and into the space within it is strained or filtered by the wire-cloth composing the body of the cone.

The manner in which I prefer to construct the cone is illustrated in Fig. 3, where the outer Wall 1 is formed of wire-cloth of fine mesh, with an inner strengthening wall 2 of heavier and coarser wire-cloth. In some cases I place an interlining of silk 3 between the outer fine wire-cloth and the inner coarser wire; but this may be omitted where the wire cloth is found to secure good results.

' In the modification, Fig. 6, the filtering-diaphragm E is set at an angle across the filtering-chamber, and thesplash-plate, instead of being fixed on the cone itself, is supported by an arm or spider under the aperture C In the above construction it will be noticed that as the surface of the filtering-cone is presented to the down-flowin g stream at an angle a portion of the water necessarily passes over the filtering-surface and is discharged at the nozzle, while that portion which passes through the meshes ofthe cloth is carried to the outside by the tube and discharged at the nozzle cl The effect of this operation is to thoroughly wash the exterior surface of the filtering-cone and keep it free from sediment in the daily use of the device.

The function of the splash-plate interposed between the surface of thecone' and the stream, directly under the inlet-aperture, is both to prevent the wear of the wire-cloth at that point where the stream would strike it if the splash-plate were not used and to so reduce the impact and force of the stream that its pressure upon the filtering-diaphragm is greatly reduced. To that end, also, sufficient space is left between the lower end of the cone and the surrounding filter-body for free passage of the water flowing over the cone.

It should be mentioned that the inclined diaphragm will be greatly improved in its action by burnishing the outer surface of the wire-cloth of which it is formed.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a filtering device for water faucets, a hollow body provided with a coupling at the upper end, and having a discharge opening at the lower end, a disk closing the upper end and provided with an aperture in the center; in combination with a hollow filtering cone having a solid bottom, with an aperture therein and a tube leading from said aperture through the filter body to the outside,substantially as set forth. i

2. In a filtering device for water-faucets, the combination, with the hollow filtering-body having an inlet in the upper end with a contracted aperture and a splash-plate fixed beneath said aperture, a direct passage through the body and an outlet at the lower end for the discharge of the principal portion of the stream from the faucet; of the filtering diaphragm formed of woven fabric set at an angle across the descending stream with the lower end thereof standing clear of the side of the filter-body, whereby a contracted passage is provided for that portion of the water flowing down the inclined surface to pass between such diaphragm and the filter-body, a solid partition fixed in horizontal position across the space below the inclined diaphragm and adapted to close in the space beneath such diaphragm from the said contracted passage to the opposite wall of the filter-body, and an outlet in such solid partition having a discharge through the sides of the filter-body to the outside, substantially as described for operation as set forth.

3. In a filtering device, the combination with a hollow filter body through which the water is adapted to flow and to discharge at the lower end, of a filtering diaphragm composed of a hollow cone with a solid bottom and an outlet in said bottom having a discharge to the outside of the filter-body, the Walls of such cone being formed of woven fabric, substantially as set forth.

In testimony that I claim the foregoing] have hereunto set my hand and seal.

XVILLIAM A. WILLIAMS. [Ls] \Vitnesses:

EDWARD E. OSBORN, O. W. M. SMITH. 

